Brake-shoe.



PATENTED MAR. 3, 1908.

4J.. s. SHEAPB. BRAKE SHOE.

APPLICATION FILED NOV. 2, 1907.

FIGURE 6 HGURE 5 /1 TTOHN E Y .IAMICS SMI'IH SHEA FE, Ul" CHICAGO,ILLINOIS.

BRAKE-SHOE.

Specification of Letters Patent.

Patented March 3, 1908.

Application filed November 2. 1907. Serial No. 400.358.

To all whom it may con-cern.'

Be it known that l, JAM Es SMITH Sua-urn, a. citizen of thev UnitedStates, residing at Chicago, in the county ol Cook and State ofIllinois', have invented certain new and useful Im rovements inBrake-Qlioes, of which the fol owing is a specification.

My invention relates to brake shoes as applied to locomotives andlcarsto simplify and improve the construction over t ie prior state of theart, and the object of my invention is the utilization of what is knownas scrap brake shoes, fi.. e. those which are worn out and therebyrendered useless. This l accomplish by the means illustrated in theaccompanying drawings, that is, by fastening the scrap shoe to -a newshoe hereinafter described, the former wearing out com- 'pletely beforethe new shoe begins to wear, thus putting to use all of the shoe,instead of being compelled to otherwise dispose of the scrap shoe.

Referring to the drawings; Figure 1 is a longitudinal view of the scrapshoe F fastened to the new shoe E. Fig. 2 is a plan view of shoe Eshowing the face of said shoe.

Fig. 3, is a cross section of shoes E & F, on the line A, B, Fig. 1,showing the method of locking the two shoes together. Fig.4, is alongitudinal View of a-driver brake shoe illustrating the same principledescribed in the car shoe, the recess H carrying a lug with which thescrap shoe is provided similar to C. Fig. 5, is a plan view of the ne rshoe provided with two countersunk cored holes M, and Fig. 6, is a viewshowing a round steel strengthening rod in conrection with the plate O.

H is a recess cored in the face of shoe E for thc pu ose of carrying alug'similar to C on the bac of another shoe; and G are recesses cored inthe face of the shoe E at both ends to carry lugs, similar to B, uponthe back of the other shoe.

Fig. 3 is a cross section of shoes E and F on the line A--B, Fi 1,showing my method oflocking the two s oes together. A bolt J passesthrough the hole R in the shoe E, and a hole corresponding to P in the,central lug of the shoc F, similar to C. This bolt is held secure bymeans of a cotter key K or by a nut, or any other suitable fasteningmeans. In this figure, O designates the steel plate as shown and extendsto the face of the shoe as at z, thereb greatly strengthening the lug.

The mec. anism shown 1n Figs. 1, 2, and 3 as above described is that olthe brake shoe as applied to cars. ln Figs. 4 and 5 a'rc views ol' theshoe applied lo locomotive drivers, and in these 'ligures the blinddriver shoo is shown, although the same general princi` pl(` can beapplied to what is known as the ilange shoe, which is precisely the sameas that applied to thc ear shoe above described.

As the ordinar)Y driver brake shoe has two flanges upon its l'acey inorder to guide it and keep it in place on the wheel, the back of' mydriver brake shoe must be cored out solliciently to allow said flanges(with which my shoe is also provided) on the iace of a new shoe to litupon the back ol" the old or scrap shoe, the. recess so formed, to be ofany size, is to lighten the shoe or just. large enough to permit ofinterlocking. The structure ol the driver brake shoe is to be of theusual construction with the exception of the part for the purpose ofstrengthening the shoe when it has worn thin.

The method of strengthening the shoe is illustrated by the mechanismshown in Fig.

6 of the drawings. N is a round, square, triangular or other shapedsteel rod of such thickness as to allow of sufficient strength and bentsubstantially in elliptical forinfor the purposesintended, itbeinghooked at both ends, it allows of an interchangeable usel either ofthese ends being available to support the shoe upon the brake head,together with the bolts which are used in holes M. O designates a steel)late suitably shaped and punched to rein orc'e the lug C1 with whichthe. back of the shoe is provided, and passes under both sides of theelliptical rod N, thus preventing the locking Abolt tearing away fromthe lug. Both the elliptical shaped rod and plate O are embedded withinthe body of the shoe as clearly shown in Fig. 5 for the purpose oireinforcing it. The shoe is made solid by means ol pouring molten ironaround said elliptical wire N and plate O.

Having thus described my invention, what I claim and desire to secureIby Letters Patcnt, is z- 1. A brake shoe having a lug centrally andintegrally located on theback ol' said shoe,

the lug having a longitudinal opening thereto and a horizontalperforation therein., said perforation located upon a middle transverse.line for the reception of .a bolt, a keeper scouring said bolt, the boltbeing projected through the erforation in said lug; in combination wit iend lugs fitting into correspending recesses in the'face of the shoe,thus preventing the displacement of the shoe either in e vertical orlateral direction.

2. A brake shoe of the character described, having e lug formedcentrally and integrally on the back of the shoe, and havin(raperforation therein for the reception of a zbolt, a keeper securingsaid bolt, the bolt being projected horizontally through the perforationin said lug, e nd lugs fitting in corresponding recesses in the fece ofthe shoe; in combination with reinforcing plates located in each shoe,thus f strelrigtluening the-saine and providing a suitabletounchition'for the bolt, thereby pre- .venting the lug from giving Wayand tearing 15 formed in the shoe to receive the lugs;'in 20 combinationwith the substentiallyellipticel strengthening rod.

In testimony whereof I eHiX my signature,

in presence of two witnesses.

v JAMES SMITH SHEAFE.

Witnesses:

GEO. S. LIVINGSTON, J. J. NELLIGAN.

